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Accessories - Steam Syphons

Recommended Installation Practices

Flexible hose must be used to connect each Rotary Union® rotating joint to its supply or drain piping. Use braided metal hose for all applications involving hot fluids - such as hot water, hot oil or steam. Use two-ply rubber hose for cooling water, refrigerants, air and vacuum service.
 

Allow for an offset between the Rotary Union® joint and the rigid pipe. Permit a slight curve in the hose to allow it to "float." This is very important.

CAUTION: A straight hose, when fully charged, becomes as rigid as solid pipe. This rigidity, plus the added weight of the fluid media and expansion due to temperature, can drastically shorten the service life of the Rotary Union® joint.

If valves or instruments are used, install them in the rigid pipe rather than the hose.

Rubber Hose Assemblies
Size (in) Order No.
1/4 X 10 480080
3/8 X 10 480081
1/2 X 10 480082
3/4 X 12 480084
1 X 14

480086
1 1/4 X 16 480088
1 1/2 X 18 480090
2 X 21 480091
2 X 24 480092
3 X 26 480975

Typical Satisfatory Installations

Avoid sharp bends or twisted hose. Extreme bends or torsion loading can diminish or eliminate the flexibility of the hose, resulting in shortened service life of the Rotary Union® joint.
Never employ straight hose connections.

Metal Hose with Male End Fittings
Size (in.) OrderNo
1/4 X 10 480064
3/8 X 10 480066
3/8 X 12 480067
1/2 X 10 480068
1/2 X 12 480069
3/4 X 12 480070
3/4 X 14 480071
1 X 14 480072
1 X 16 480073
1 1/4 X 16 480074
1 1/2 X 18 480076
2 X 15 440521
2 X 21 480078
2 1/2 X 24 480634
3 X 26 480635

Recommended Installation Practices

Offset installations should be fitted with proper length hose to provide smooth curvatures and eliminate sharp, fracturing bends. Follow minimum Flexible Hose Size and Length recommendations in accompanying table.

Smooth-curve installations give maximum flexibility and service life. Examples: For 1/2" I.D. hoe, observe a minimum bending radius of 8"; for 1" I.D. hose, use at least and 11" radius; for 2" I.D. hose, provide a minimum 18" bending radius.

Recommended Minimum Size and Length

For best results, allow every Rotary Union® joint to "float" on the turning cylinder without load or tension. Use at least the minimum hose size and length in the accompanying tables.

Elbow Connection
Model
Size(in.)		 Hose Size
and Length
(in.)		 Dimensions (in.) 
 A B 
1/2   1/2 X 10  2 1/2 9 7/8
 3/4  1/2 X 10  2 5/8  10
 1  1/2 X 10  2 5/8  10 1/8
 1 1/4   1/2 X 10  2 3/4  10 3/8
 1 1/2  3/4 X 12  2 3/4  12 1/4
 2  1 X 14  3 3/8  14 3/8
 2 1/2  1 1/4 X 16  3 3/8  16 3/8
 3   1 1/4 X 16  3 3/8  16 7/8
 3.5  2 X 2  6 1/2  22 1/2
 4  2 1/2 X 24  7  25 1/2

 

Sharp bends cause hose fatigue and fracture when corrugations are stretched and compressed. The use of one or two pipe fittings for proper installation will insure long, trouble-free service.

The use of standard pipe unions will aid installation and prevent twisting of hose. A twisted hose loses its flexibility and reduces its service life.


Model
Size(in.)		 Hose Size
and Length
(in.)		 Dimensions (in.) 
 A B 
1/2   1/2 X 10  2 5/8 1 
 3/4  3/4 X 10  2 1/2  11 7/8
 1  1 X 14  3 1/4  14 1/4
 1 1/4   1 1/4 X 16  3 1/2  16 1/4
 1 1/2  1 1/2 X 18  3 3/4  18 1/2
 2  2 X 21  4 3/8  21 3/4
 2 1/2  2 X 21
2 1/2 X 24		  4 3/8
4 1/4		  21 3/4
24 3/4
 3 2 1/2 X 24
3 X 26 		  4 1/4
4 1/2		  24 3/4
28 5/8
 3.5  3 X 26  8  28 3/8
 4  4 X 26  8  2

Duff-Norton manufactures Mechanical Actuators (Screw Jacks), Electromechanical Linear Actuators, Electric Cylinders and  Rotating Joints. Since 1883, Duff-Norton has earned a reputation for reliable, high quality products meeting the industrial lifting, positioning, and transfer needs of our worldwide customers and has been ISO 9001 registered since 1994. HyperLink
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